How many millivolts of electrical power does a thermocouple produce?

Thermocouples typically generate a voltage that is proportional to the temperature difference between the junctions of two different metals. The output voltage generated by a thermocouple commonly falls within a range of 25 to 30 millivolts for most standard types when subjected to a temperature gradient, which makes the choice of 25 to 30 millivolts accurate.

This range of voltage output is particularly relevant for common thermocouple types used in various applications. The actual millivolt output can vary depending on the type of thermocouple and the specific temperature it is measuring, but for standard industrial thermocouples used in typical conditions, the expected voltage output aligns closely with this range. Understanding this output is crucial for applications relying on precise temperature measurements and control.